Feature●Magnetic Lens Cap for Kase Magnetic Filters●****PLEASE NOTE**** Works only with Kase 77mm Magnetic Filters.●****PLEASE NOTE**** WIll NOT work with ordinary Non Magnetic Filters.●Magnetized Aluminum Alloy. Felt Lining.●Lightweight. Weighs 18g 0.6ozDescription Magnetic Lens Cap for Kase Magnetic Filters